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Finding the Fourth Proportional to 169,912.70, 254,860.95 and 57,581.90

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Solution

The fourth proportional to 169,912.70, 254,860.95 and 57,581.90 is: 86,370.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,912.70 : 254,860.95 = 57,581.90 : x
  2. Step 2: Convert to fraction form
    169,912.70/254,860.95 = 57,581.90/x
  3. Step 3: Cross multiply
    169,912.70x = 254,860.95 × 57,581.90
  4. Step 4: Simplify right side
    169,912.70x = 14,675,377,736.81
  5. Step 5: Solve for x
    x = 14,675,377,736.81/169,912.70
  6. Step 6: Final answer
    x = 86,370.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.